Log in

You are here

Did you know that Turner's oak occurs in the wild?
Quercus xturneri
Posted Mon, 2020-12-14 13:35 in Charles Snyers d'Attenhoven's blog
This blog entry focuses on the Engelmann oak grove at Los Angeles County Arboretum and Botanic Garden.
engelman_sb_600x450_0.jpg
Posted Sat, 2018-12-15 16:02 in Charles Snyers d'Attenhoven's blog
This blog post focuses on the day and a half we spent in San Luis Obispo County. The tree of that leg of our trip was clearly Quercus agrifolia from the champion Ancestor tree at the Halter...
q_agrifolia_600x450.jpg
Posted Sun, 2018-12-02 15:55 in Charles Snyers d'Attenhoven's blog
After moving it a month ago, we now have re-looked our website, making it fully responsive.
New IOS Theme 2018
Posted Thu, 2018-09-27 13:20 in Charles Snyers d'Attenhoven's blog
We moved our website to A2 Hosting's data center in Michigan on Friday. The migration went very well.
Posted Tue, 2018-08-28 05:15 in Charles Snyers d'Attenhoven's blog
I have always suspected that there was a secret hawthorn society hiding within the IOS. Last weekend, the Belgian Dendrology Society held a full-day event devoted to Crataegus. Three past and...
Posted Tue, 2017-10-10 11:46 in Charles Snyers d'Attenhoven's blog
A one-day trip in Los Lunas and Albuquerque to see oaks in the city
Posted Fri, 2017-09-22 10:18 in Charles Snyers d'Attenhoven's blog
In the last days of September 2015, I visited La Closerie du Rond-Chêne and its oak collection, in southern Belgium, with past IOS President, Eike Jablonski.
Posted Sun, 2016-12-18 18:24 in Charles Snyers d'Attenhoven's blog
Dan Keiser will be showing his IOS documentary, covering 20 years of traveling with the Oak Society, in New Richmond, Wisconsin on the 21st of February. 
Posted Mon, 2016-02-15 12:03 in Charles Snyers d'Attenhoven's blog
Tomorrow, the United Nations Conference on Climate Change COP21 opens in Paris.  A couple of days ago, I came across an essay published by Jonathan Franzen, author of Freedom, that I found quite...
Posted Sun, 2015-11-29 11:05 in Charles Snyers d'Attenhoven's blog
Interesting article on the website of Nature, the science weekly magazine, referring to a study they published.  The number of trees on the planet is estimated to be 3 trillion. 
Posted Thu, 2015-09-24 07:32 in Charles Snyers d'Attenhoven's blog

Pages

Editor's Picks

Past IOS President Allen Coombes, Curator of Scientific Collections at Puebla University Botanic Garden, discusses leaf variability in Quercus ceirpes (still image from the documentary)
A new documentary by Maricela Rodríguez Acosta
Website Editor | Feb 17, 2026
Quercus miyagii acorn and dried leaves
A rare oak endemic to the Ryukyu Islands of Japan
Elion Jam | Feb 16, 2026
A moss-covered oak (Quercus orocantabrica) in Mata de Albergaria, Peneda-Gerês National Park, Portugal  © Amit Zoran
Steve Potter reviews a new book that features oaks
Steve Potter | Feb 11, 2026

Plant Focus

Quercus canariensis in Cornwall Park, Epsom, Auckland, New Zealand, the champion specimen in New Zealand, planted in the 1920s, 27.2 m tall with a trunk diameter of 209 cm (G. Collett pers. comm. 2026)  © Gerald Collett
Antonio Lambe shares his views on this threatened oak native to Iberia and North Africa

CSA's blog

Did you know that Turner's oak occurs in the wild?
Quercus xturneri
Posted Mon, 2020-12-14 13:35 in Charles Snyers d'Attenhoven's blog
This blog entry focuses on the Engelmann oak grove at Los Angeles County Arboretum and Botanic Garden.
engelman_sb_600x450_0.jpg
Posted Sat, 2018-12-15 16:02 in Charles Snyers d'Attenhoven's blog
This blog post focuses on the day and a half we spent in San Luis Obispo County. The tree of that leg of our trip was clearly Quercus agrifolia from the champion Ancestor tree at the Halter...
q_agrifolia_600x450.jpg
Posted Sun, 2018-12-02 15:55 in Charles Snyers d'Attenhoven's blog
After moving it a month ago, we now have re-looked our website, making it fully responsive.
New IOS Theme 2018
Posted Thu, 2018-09-27 13:20 in Charles Snyers d'Attenhoven's blog
We moved our website to A2 Hosting's data center in Michigan on Friday. The migration went very well.
Posted Tue, 2018-08-28 05:15 in Charles Snyers d'Attenhoven's blog
I have always suspected that there was a secret hawthorn society hiding within the IOS. Last weekend, the Belgian Dendrology Society held a full-day event devoted to Crataegus. Three past and...
Posted Tue, 2017-10-10 11:46 in Charles Snyers d'Attenhoven's blog
A one-day trip in Los Lunas and Albuquerque to see oaks in the city
Posted Fri, 2017-09-22 10:18 in Charles Snyers d'Attenhoven's blog
In the last days of September 2015, I visited La Closerie du Rond-Chêne and its oak collection, in southern Belgium, with past IOS President, Eike Jablonski.
Posted Sun, 2016-12-18 18:24 in Charles Snyers d'Attenhoven's blog
Dan Keiser will be showing his IOS documentary, covering 20 years of traveling with the Oak Society, in New Richmond, Wisconsin on the 21st of February. 
Posted Mon, 2016-02-15 12:03 in Charles Snyers d'Attenhoven's blog
Tomorrow, the United Nations Conference on Climate Change COP21 opens in Paris.  A couple of days ago, I came across an essay published by Jonathan Franzen, author of Freedom, that I found quite...
Posted Sun, 2015-11-29 11:05 in Charles Snyers d'Attenhoven's blog
Interesting article on the website of Nature, the science weekly magazine, referring to a study they published.  The number of trees on the planet is estimated to be 3 trillion. 
Posted Thu, 2015-09-24 07:32 in Charles Snyers d'Attenhoven's blog

Pages

The International Oak Society acknowledges the generous support of the following institutions:

Supporting Institutional Members

 

Standard Institutional Members

Rice University
San Diego Botanic Garden logo
San Diego Zoo Wildlife Alliance logo
South Carolina Botanical Garden

 

The Huntington
The John Fairey Garden